Mixed metal complex emitting white light and preparation thereof

A technology of mixing metals and complexes, which is applied in the direction of luminescent materials, compounds containing elements of group 3/13 of the periodic table, silver organic compounds, etc., and can solve problems such as brightness, efficiency, stability, and low reproducibility of performance parameters , to achieve the effect of improving luminous brightness, high luminous brightness, high stability and reproducibility

Inactive Publication Date: 2009-05-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the examples of using the above materials to generate white light are basically limited to the two methods of forming exciplexes or using mixed fluorescent materials to obtain white light, and their brightness, efficiency, stability, and reproducibility are all lower than the needs of practical applications performance parameters

Method used

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  • Mixed metal complex emitting white light and preparation thereof
  • Mixed metal complex emitting white light and preparation thereof
  • Mixed metal complex emitting white light and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1 Preparation of Ligand I:

[0021] (1) Add 16.2g (0.15mol) of o-phenylenediamine and 9.6g (0.05mol) of amine triacetic acid into a 250ml round bottom flask, add 60ml of ethylene glycol and stir evenly, heat the oil bath to 140-200 degrees to reflux 8-12 hours, during the reaction process, a water separator can be installed to draw the generated water out of the reaction system; after the reaction, cool slightly while stirring and pour into 200ml of water, filter, recrystallize ethanol (decolorize with activated carbon if necessary), and obtain the product NTB (Yield 85%).

[0022] (2) In a 100ml flask, add 50% NaOH (25mmol) aqueous solution, 2.5mmol NTB, 20mg tetrabutylammonium bromide, and 40ml butanone, stir, heat to reflux, and add 8.75mmol chloromethyl 2 after the solution becomes clear. -Pyridine hydrochloride, continue to reflux for 5h, stop the reaction, pour the solution into 300ml water, wait overnight for butanone to volatilize, then filter, dissolve...

Embodiment 2

[0026] Preparation of Ligand II:

[0027] With step (1) (2) among the embodiment 1, but the chloromethyl 2-pyridine hydrochloride in (2) is changed into chloromethyl 3-pyridine hydrochloride.

[0028] NMR data of the resulting product:

[0029] 1 H-NMR (300MHz in DMSO-d 6 , 80°C): δ4.32 (6H, s, 1), 5.32 (6H, s, 6), 7.04 (3H, m, 4), 7.14 (9H, m, 2, 3, 5), 7.32 (3H , m, 9), 7.48 (3H, m, 10), 8.17 (3H, s, 7), 8.32 (3H, d, 8).

Embodiment 3

[0031] Preparation of Ligand III:

[0032] Same as step (1)(2) in Example 1, but change the chloromethyl 2-pyridine hydrochloride in (2) to chloromethyl 4-pyridine hydrochloride.

[0033] NMR data of the resulting product:

[0034] 1 H-NMR (300MHz in CDCl 3 ): δ4.20 (6H, s, 1), 4.93 (6H, s, 6), 6.37 (6H, d, 7), 7.02 (3H, d, 2), 7.28 (6H, m, 3, 4) , 7.62(3H,d,5), 8.25(6H,d,8).

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Abstract

The invention discloses a mixed-metal complex illuminating white light. The structure of the luminescence center of the complex is EuAg3 (PyNTB) 2. The invention also discloses a preparation method of the mixed-metal complex: the mixed-metal complex illuminating white light is prepared by transition metal salts, rare earth metal salts and PyNTB ligands with the mole ratio is 6:1:2 by adopting appropriate methods (e.g. stratified diffusion, natural volatilization, hydrothermal reaction and the like). White light emission obtained from the complex in the invention are not required to be treated with light diffraction and light mixing of three primary colors (red, green and blue) in the traditional method for obtaining the white light, therefore, the waste of light energy can be avoided. As the whole luminescence process is the energy transition inside the complex, theoretically, the shining efficiency is quite high and has bright application future.

Description

technical field [0001] The invention relates to a white light-emitting mixed metal complex and a preparation method thereof, in particular to a white light mixed complex based on a rare earth-transition metal and a PyNTB tripod ligand and a preparation method thereof. Background technique [0002] In recent years, new luminescent materials have become a new growth point in the fields of flat-panel display backlight and general solid-state luminescent lighting. Among them, small organic molecules and metal-organic complex light-emitting materials have the characteristics of strong chemical modification, wide selection range, easy purification, high luminous efficiency, and the ability to produce red, green, blue and other colors of light. It has opened up a new world in the field of monochromatic luminescence and composite luminescence. But so far, the examples of using the above materials to generate white light are basically limited to the formation of exciplexes or the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D401/14C07F1/10C07F5/00C09K11/06
CPCY02B20/181Y02B20/00
Inventor 刘煜潘梅丁俊蓝美华苏成勇
Owner SUN YAT SEN UNIV
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